Doubled bushed center core bobbin



Dec. 8, 1953 F. BURLEIN DOUBLED BUSHED CENTER COREBQBB'IN Filed 001;. 12, 1950 3nnentot (Ittoirneg Patented Dec. 8, 1953 ass-1,912

Y DOUBLED Bosnian CENTERCORE BoBBm -.'LesterE-.Burlein, 'Honesdale, Pa., ==assignor to flloverleafsFreeland' Corporation, Honesdale, Pa.,.qa corporation of Pennsylvania" Application10ctober12, 1950', Serial No. 189,863

5 Claims; (Cl. 242-124) This invention relates to'abobbinspool orthe like 'butmore' particularlyand specifically to double "bushed' center-core bobbin or winder.

An'object of the invention isthe provision of a bobbin center-core or tube in the opposite ends of which bushings are secured in-a novel improved manner. j

Another object of the invention is the-provision of a' bobbin or spoolhaving an easily and quickly removable and replaceable center core or tube toxmake the bobbin variable as to length, variable as to diameter by association with barrels of different diameters, and adaptable for use with either straightor tapered spindles; I

A: further object of the invention is theprovi-' sion of a bobbin or'spool which'can be quickly assembled and disassembled. p

"A still further object of the invention is the provision of .the spool which 'isstu'rdy and highly efiicient. in Omration'and which can be manue factured at a comparatively low price.

' Other obj'ects'of theinvention and benefits and advantages derived from it will appear in and be understood irom reading! the following description in the light of the accompanying drawings in which an embodiment of the inventive concept is illustrated.

In the drawings: 7 I

Figwl is a longitudinal sectional view through abobbin embodying the invention.

1 Fig.2 is an end view ofthebobbin.

Fig. 3 is an end view o-f'the center core or tube, this element beingshown enlarged over'itsillustration inFig. l.

-'Fig.{4 is a fragmentary view in longitudinal section of an end ofthe center-core oritube, section being taken on line 4-4 of Fig. 3. s

In the improved bobbin, A is the bobbin barrel and is preferably although not necessarily Bakelite. The barrel is hollow and open ended. Each barrel end is closed by a head and an insert.

At its upper end the head is designated B and the insert C while at its lower end the head is D and the insert is E. Preferably the heads are composed of Bakelite while the inserts are made of aluminum, but other materials could be utilized if desired.

Each head is centrally provided with an opening defined by the straight wall I and this opening is of the same diameter as the interior diameters of the barrel ends. Each head opening I has an outwardly fired wall portion 2. Each insert is provided with a straight wall portion 3 and at this point is of a diameter to snugly telescope the outer end of the barrel. This wall serves as a pilot for guiding the insert into the open barrel end. 7 At their outer endseach insert is provided with an outwardly flared circumferential shoulder or flange 4 which seats on-the flare 2 of the head.

Each insert is provided with a hollow open ended-collar 5 which'is internally-threaded as at 6. These collars are at the inner sides or inner ends of the inserts andare disposed within the bobbin 'barrel. Each-insert is centrally provided with an opening or passageway which communicates at its inner end with its representative collar. The passageway in the insert 0 is designated land has an enlarged portion 8 for the reception of a flyer. The passageway in the insert E is designated 9.

The center core or tube 'F' is hollow and open ended and is shorter than the'barrel and of small diameter in comparison with the diameter of the barrel. At its opposite ends, see-Fig. 4, the core is ofred'uced" diameter as at' [0. I Inward of its reduced ends the core is externally threaded at I l.

--A-pair of bushings are associated with the core, one bushing being used with each end of the core; The bushing G'is associated with the lower end of the core and is of the proper diameter to telescope and have a pressed fit with the interior diameterthereof'. The inner end l2 of the bushing abuts a circumferential shoulder l3 on the interior of the core. The-bushing is centrally provided with a longitudinally extending bore, or passageway l4: At spaced points about the exterior of-one of its ends the bushing is provided with-grooves t5: The'outer end of the core or tube isspunover or "staked into these grooves as at .Hithuslocking thebushing to or in the core in'respect'to. both axial rotation and longitudinal movement.

The bushing H at the upper end of the bobbin is identical to the previously described bushing G with the exception that it is longer and the inner end of its bore I1 is counter-sunk or flared at l8. The same numerals are utilized in respect to bushing H that are used in respect to bushing G. Bushing H has a pressed fit with the interior of the core and is locked against'movement in the same manner as bushing G.

In the drawings a tapered spindle K is illus trated in dotted lines. Accordingly the bores l4 and l! of the bushings are illustrated as being tapered. Were a straight spindle used bushings with straight bores would be provided.

The manner in which the bobbin is assembled or disassembled will be obvious. By reason of the inserts C and E having threaded engagement with the ends of the core or tube F the heads are readily clamped on and against the barrel ends. Removal of the inserts will permit the substitution of a center core or tube having the attributes to meet the particular demands. If a bobbin of shorter length is desired it is necessary only to :substitute a shorter barrel and a center core of proper length. If a bobbin of greater diameter is desired this will call for replacement of the barrel and also of heads and inserts of the proper diameter but will permit the use of the same center core. It will be understood that center cores having bushings with both tapered and straight bores will be available to permit use of the bobbin with tapered or straight spindles.

The arrangement permits a greater standardization of parts to meet and provide for varying conditions and as a consequence thereof reduces the manufacturin costs of bobbins.

Departures from the specific construction illustrated can be made without departing from the inventive concept and the invention is to be limited only by the scope of the hereinafter following claims.

The countersunk end [8 of the bushing H assures easy entry of the spindle end into this bushing when the bobbin is mounted for use.

What I claim is:

1. In a bobbin or spool, a hollow open ended barrel, a centrally apertured head at each barrel end, a centrally apertured insert extending through each head aperture into the barrel and adapted to hold its respective head on the barrel end, a hollow open ended center core extending through the barrel and having detachable connection with the inserts and forming a passageway inter-connecting the aperture of the inserts, a tubular open ended hollow bushing disposed in each end of the center core, the outer face of the side wall of each bushing at the outer. end thereof being provided with spaced apart longitudinally extending grooves, and the ends of the center core being upset downwardly and wedged in said grooves whereby the bushings are held in the center core against longitudinal and rotative movement.

2. In a bobbin or spool, a hollow open ended barrel, a centrally apertured head at each barrel end, a centrally apertured insert extending through each head aperture into the barrel and adapted to hold its respective head on the barrel end, a hollow open ended center core extending through the barrel and having detachable connection with the inserts and forming a passageway inter-connecting the aperture of the inserts, a tubular open ended hollow bushing disposed in each end of the center core, the center core adjacent each of its ends being internally provided with a circumferential shoulder, the inner ends of the bushings having abutting engagement with said shoulders, the outer faces of the outer ends of the bushings being provided with spaced apart longitudinally extending grooves, and the outer ends of the center core being upset downwardly into the bushinggrooves and locking the bushings against longitudinal and rotative movement in respect to the center core.

3. For use in a bobbin or spool, a hollow open ended center core, a hollow bushing in each end of the core, the outer face of the outer end of each bushing being provided with longitudinally extending grooves disposed in spaced relation about the bushing, each groove having an open end at the outer end of the bushing and terminating at its inner end in a shoulder, and the outer ends of the core being upset downwardly into and filling the bushing grooves to lock the bushing against both longitudinal and rotative movement in respect to the core. 4. For use in a bobbin or spool, a hollow open ended core provided adjacent but inward of each of its ends and on its external face with screw threads, the core internally of each end and for a considerable length being of enlarged diameter to provide circumferential shoulders intermediate the length of the core, a hollow open ended bushing having a pressed fit with the enlarged interior portion at each end of the core and having their inner ends in abutment with the shoulders, the outer faces of the outer ends of the bushings being provided with spaced apart longitudinally extending grooves having open tops, the outer ends of the core beyond the threaded portions thereof being upset downwardly into and fillin the bushing grooves to lock the bushings against longitudinal and rotative movement in respect to the core.

5. A construction, as defined in claim 4, wherein, the inner end of one of the bushings is countersunk to act as a guide in facilitating the entry of a spindle into the bushing.

LESTER F. BURLEIN. 

